US Bridges

SH 18-04-LM 9.81 over Maple Slough

Good

Craighead County, Arkansas · 4 Mi. W Jct. SH 158 · Structure no. 0000000000X1158

Built
2003
22 years old
Condition
Good
inspected September 2023
Type
Culvert
Concrete
Length
77 ft
6 main spans
Daily traffic
12,000
2018 count
Owner
State
State Highway Agency

About this bridge

SH 18-04-LM 9.81 over Maple Slough is a concrete culvert carrying SH 18-04-LM 9.81 over Maple Slough in Craighead County, Arkansas. It was built in 2003, so it is 22 years old, younger than the Arkansas average of 45.1 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 12,000 vehicles a day, roughly 9% of them trucks, projected to reach 16,700 by 2038. The structure is 77 ft (23.5 m) long. If it were closed, the detour would be 9.9 mi (16 km).

Location

Open in Google Maps
CarriesSH 18-04-LM 9.81
CrossesMaple Slough
Location4 Mi. W Jct. SH 158
RouteState Highway 18
CountyCraighead County
StateArkansas
Coordinates35.82219, -90.5503
Functional classUrban Other Principal Arterial

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert7 GoodSome minor problems.
Last inspectionSeptember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating42 US tons
Inventory rating25 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans6
Design loadH 20
Structure length77 ft (23.5 m)
Longest span12 ft (3.7 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deck99 ft (30.2 m)

Traffic and service

Average daily traffic12,000 (2018)
Projected traffic16,700 by 2038
Trucks9%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed9.9 mi (16 km)
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was SH 18-04-LM 9.81 over Maple Slough built?

It was built in 2003, making it 22 years old in 2025.

What condition is SH 18-04-LM 9.81 over Maple Slough in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in September 2023.

How much traffic does SH 18-04-LM 9.81 over Maple Slough carry?

About 12,000 vehicles per day (2018 count), of which roughly 9% are trucks.

How long is SH 18-04-LM 9.81 over Maple Slough?

The structure is 77 ft (23.5 m) long with a longest span of 12 ft (3.7 m).

Who owns SH 18-04-LM 9.81 over Maple Slough?

It is owned by the State Highway Agency.